Finding the Fourth Proportional to 2,210.63, 3,317.76 and 1,056.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,210.63 : 3,317.76 = 1,056.38 : x
2. Step 2: Convert to fraction form
   2,210.63/3,317.76 = 1,056.38/x
3. Step 3: Cross multiply
   2,210.63x = 3,317.76 × 1,056.38
4. Step 4: Simplify right side
   2,210.63x = 3,504,798.72
5. Step 5: Solve for x
   x = 3,504,798.72/2,210.63
6. Step 6: Final answer
   x = 1,585.43